Early Effects of Ketamine vs Placebo With Venlafaxine in Severe Depression Patients (MOODBOOSTER)

September 1, 2025 updated by: Assistance Publique - Hôpitaux de Paris

Early Efficacy of Ketamine Compared With Placebo as Adjunctive Therapy With Venlafaxine in Severely Unipolar Depressed Inpatients

Unipolar major depressive disorder is the leading cause of disability worldwide. The most commonly used treatments for major depressive episodes (MDE) are antidepressant medications. However, they have limited efficacy and their onset of action is long, ranging between 2 to 6 weeks. During this period, hospitalization can become necessary, especially for severe MDE. It is crucial to improve the early effectiveness of treatments for these patients in order to alleviate their suffering, limit complications (suicidal risk), and reduce hospitalization durations (approximately 1000 euros per day). The efficacy of intravenous ketamine has been demonstrated in pharmaco-resistant depression but remains to be proven in non-pharmaco-resistant severe MDE. Additionally, PET imaging using [11C]UCB-J, which allows the in vivo study of synaptic density in the human brain, has shown significant decreases in synaptic density in unipolar patients with severe MDE. Furthermore, a single ketamine infusion was found to enhance synaptogenesis

Study Overview

Status

Recruiting

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

60

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

      • Le Kremlin-Bicêtre, France, 94250
        • Not yet recruiting
        • Bicetre Hospital - CRC
        • Contact:
        • Principal Investigator:
          • laurent becquemont
      • Orsay, France, 94401
        • Active, not recruiting
        • CEA/SHFJ
      • Étampes, France, 91152
        • Not yet recruiting
        • EPS Barthélémy Durand
        • Principal Investigator:
          • christian trichard
        • Contact:
    • France
      • Le Kremlin-Bicêtre, France, France, 94270
        • Recruiting
        • Psychiatry unit
        • Contact:
        • Principal Investigator:
          • Romain Colle, MD-PHD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Current MDE in the context of unipolar major depressive disorder (DSM-5 criteria), hospitalized (open care) for this episode, with a minimum HDRS score of 24 and in the context of an indication for the introduction of venlafaxine treatment.
  • Patient aged between 18 and 65.
  • Signed free and informed consent
  • Membership of a social security scheme
  • For women of childbearing age, effective contraception throughout study participation.* (*Combined hormonal contraception (containing estrogen and progestin) associated with ovulation inhibition: (oral, intravaginal, transdermal), Progestin-only hormonal contraception associated with ovulation inhibition: (oral, injectable, implantable), Intrauterine device (IUD), Hormonal intrauterine system (IUS), Bilateral tubal occlusion, Vasectomized partner, Sexual abstinence.)

Exclusion Criteria:

  • Criteria relating to associated pathologies entailing particular risks: pharmaco-resistant CDE (failure of at least two properly conducted treatments with two different antidepressant treatment classes), CDE with psychotic features, psychotic disorder, bipolar disorder, current (<1 month) substance use disorder (excluding tobacco).
  • Liver impairment (AST and/or ALT > 3 ULN, PAL and/or GGT and/or bilirubin > 2 ULN).
  • Severe renal insufficiency (GFR <30ml/min with Cockcroft's formula).
  • Bradycardia less than 55 beats per minute.
  • Contraindication to ketamine : Hypersensitivity to active substance or excipients, comatose state, central nervous system (CNS) depression, Parkinson's disease, Lewy body dementia, progressive supranuclear palsy, known prolongation of the QTc interval (>450ms for men and >470ms for women) or congenital long QT syndrome, recent acute myocardial infarction, uncompensated heart failure, history of ventricular arrhythmias or torsades de pointes, uncorrected hypokalemia (K+ < 3. 5 mmol/l), epilepsy, uncontrolled hypertension, porphyria, history of stroke (CVA), intracranial hypertension.
  • Contraindication to venlafaxine (hypersensitivity to venlafaxine or excipients, are hereditary conditions of fructose intolerance, glucose-galactose malabsorption syndrome, or sucrase-isomaltase deficiency, unstable hypertension, no indication for venlafaxine treatment in clinician's opinion due to ineffectiveness or tolerability of previous venlafaxine treatment).
  • Current or previous treatment with venlafaxine or ketamine in the month prior to study inclusion.
  • Need to maintain another antidepressant, MAOI, Millepertuis or benzodiazepines (cyamemazine is permitted). Or potential drug interactions in case of recent cessation of these treatments (based on the Summary of Product Characteristics (SmPC) of the respective medication(s) and their half-life).
  • Any other unspecified reason (clinically significant illness or anomaly) which, in the opinion of the investigator or the sponsor, could compromise the safety of the participant.
  • Pregnant or breast-feeding patients (women of childbearing potential must have a negative urine or blood test for human chorionic gonadotropin prior to trial entry). Planned pregnancy within three months of enrolment
  • Adult under guardianship, curatorship or safeguard of justice
  • Participating in other interventional research involving the human body or within the exclusion period following previous research involving the human body, if applicable.
  • Social insurance

Additional criteria for inclusion in the ancillary study :

- Contraindications to [11C]UCB-J PET-MRI

  1. Absolute contraindications: Pacemaker or neurosensorial stimulator or implantable defibrillator; clip on a brain aneurysm or vascular malformation; intraocular or intracerebral ferromagnetic foreign body; prostheses or objects or mobile ferromagnetic metal fragments; cochlear implants; peripheral stimulator; neurosurgical ventriculoperitoneal shunt valves; automated injection device such as insulin pump, glucose sensor; permanent eyelid or lip makeup; non-removable piercing; claustrophobia.
  2. Relative contraindications: Dental prostheses and orthodontic material; certain intrauterine devices; certain tattoos; certain transdermal patch implants; certain metal implants far from the examined area. (The investigator physician and/or radiology operator will always conduct a precise questionnaire before the examination to ensure perfect safety and absence of MRI danger)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Ketamine Group
The patient will receive 3 doses of intravenous ketamine (0,50mg/kg) in addition to the usual venlafaxine treatment
Patients randomized in this group will receive an intravenous ketamine in addition to venlafaxine for one week (on Days 1, 4 and 7)
Other Names:
  • Ketamine+Venlafaxine
Placebo Comparator: Placebo group
The patient will receive 3 doses of intravenous placebo (50mL of NaCl 9‰) in addition to the usual venlafaxine treatment
Patients randomized in this group will receive an intravenous placebo in addition to venlafaxine for one week (on Days 1, 4 and 7)
Other Names:
  • Placebo+Venlafaxine

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
the early efficacy on depressive symptomatology
Time Frame: at day 0 and day 7
Evolution of the total score of the Hamilton Depression Rating Scale (HDRS 17 items: scale items are rated from 0 to 2 or from 0 to 4 and the score ranges from 0 to 52) after 7 days of treatment by venlafaxine The HDRS scale will be assessed by a senior psychiatrist or psychologist trained in administering the scales, following a psychiatric interview
at day 0 and day 7

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
The efficacy of ketamine on HDRS overall score
Time Frame: at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine
To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing changes in overall score obtained on the HDRS 17-items.
at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine
The efficacy of Ketamine on HDRS response rate
Time Frame: at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine
To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing HDRS response rate (improvement of 50% or more in the overall HDRS score) between groups
at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine
The efficacy of Ketamine on HDRS remission rate
Time Frame: To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing remission rate (HDRS 17 items ≤ 7) between groups
at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine
To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing remission rate (HDRS 17 items ≤ 7) between groups
The efficacy of ketamine on BDI overall score
Time Frame: at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine
To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing changes in overall score obtained on the short form of the Beck Depression Inventory (BDI)
at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine
The efficacy of ketamine on CGI scale
Time Frame: at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine
To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing changes in Clinical Global Impression (CGI) scale
at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine
Duration of hospitalization
Time Frame: 42 days
Evaluate whether ketamine as adjunctive therapy reduces the length of hospital stay, noting the number of days spent in hospital (including re-hospitalization) The discharge from hospitalization will be decided by the treatment-blinded clinician responsible for the patient
42 days
Reduction of suicidal ideation
Time Frame: at day 0 and day 7
Evaluate whether adjunctive ketamine reduces early suicidal ideation, by assessement of overall Columbia-Suicide Severity Rating Scale (C-SSRS) score, after 7 days of treatment by venlafaxine
at day 0 and day 7
Clinical improvement on HDRS overall score
Time Frame: at day 7, 14, 28 and 42
Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking changes in overall score obtained on the 17-item Hamilton Depression Rating Scale (HDRS)
at day 7, 14, 28 and 42
Clinical improvement on HDRS response rate
Time Frame: at day 7, 14, 28 and 42
Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking HDRS response rate (improvement of 50% or more in the overall HDRS score)
at day 7, 14, 28 and 42
Clinical improvement on HDRS remission rate
Time Frame: at day 7, 14, 28 and 42
Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking remission rate (HDRS 17 items ≤ 7)
at day 7, 14, 28 and 42
Clinical improvement on BDI overall score
Time Frame: at day 7, 14, 28 and 42
Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking changes in overall score obtained on the short form of the Beck Depression Inventory (BDI)
at day 7, 14, 28 and 42
Clinical improvement on CGI scale
Time Frame: at day 7, 14, 28 and 42
Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking changes in Clinical Global Impression (CGI) scale
at day 7, 14, 28 and 42
Tolerance on blood pressure
Time Frame: Day 1, 4, 7
Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes post-infusion of treatment or placebo on blood pressure
Day 1, 4, 7
Tolerance on heart rate
Time Frame: Day 1, 4, 7
Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on heart rate.
Day 1, 4, 7
Tolerance on respiratory rate
Time Frame: Day 1, 4, 7
Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on respiratory rate
Day 1, 4, 7
Tolerance on nausea and vomiting
Time Frame: Day 1, 4, 7
Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on nausea/vomiting
Day 1, 4, 7
Tolerance on dissociation
Time Frame: Day 1, 4, 7
Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on dissociation
Day 1, 4, 7
Tolerance on headaches
Time Frame: Day 1, 4, 7
Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on headaches
Day 1, 4, 7
The consumption of anxiolytic treatments
Time Frame: During all the study
cumulative consumption in mg of cyamemazine will be recorded over the entire study period
During all the study
Biomarkers
Time Frame: Day 1 and 14
Identify biomarkers predictive or associated with the efficacy of venlafaxine associated with ketamine
Day 1 and 14

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Synaptic density variation in the whole brain
Time Frame: Day 0 and 14
Within-subject variation in synaptic density between day 0 and day 14 following treatment initiation of venlafaxine, estimated by measuring the rate of [11C]UCB-J binding to SV2A proteins by PET-MRI in the whole brain
Day 0 and 14
synaptic density variation in the cingulate cortex
Time Frame: Day 0 and 14
Within-subject variation in synaptic density between day 0 and day 14 following treatment initiation of venlafaxine, estimated by measuring the rate of [11C]UCB-J binding to SV2A proteins by PET-MRI in the cingulate cortex
Day 0 and 14
synaptic density variation in the prefrontal cortex
Time Frame: Day 0 and 14
Within-subject variation in synaptic density between day 0 and day 14 following treatment initiation of venlafaxine, estimated by measuring the rate of [11C]UCB-J binding to SV2A proteins by PET-MRI in the prefrontal cortex
Day 0 and 14
synaptic density variation in the hippocampus
Time Frame: Day 0 and 14
Within-subject variation in synaptic density between day 0 and day 14 following treatment initiation of venlafaxine, estimated by measuring the rate of [11C]UCB-J binding to SV2A proteins by PET-MRI in the hippocampus
Day 0 and 14
Relationship between ketamine efficacy and synaptogenesis
Time Frame: Day 0 and 14
Correlation between changes in the HDRS scale and within-subject variation in synaptic density between day 0 and day 14 following treatment initiation of venlafaxine.
Day 0 and 14

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Romain COLLE, Service Hospitalo-Universitaire de Psychiatrie - Hôpital Bicêtre

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 20, 2024

Primary Completion (Estimated)

March 1, 2026

Study Completion (Estimated)

April 1, 2026

Study Registration Dates

First Submitted

July 15, 2024

First Submitted That Met QC Criteria

July 15, 2024

First Posted (Actual)

July 18, 2024

Study Record Updates

Last Update Posted (Estimated)

September 3, 2025

Last Update Submitted That Met QC Criteria

September 1, 2025

Last Verified

December 1, 2024

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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